package com.luoc;

public class ThreadDemo {
    public static void main(String[] args) {
        System.out.println("aa");
        System.out.println("bb");
        System.out.println("cc");
        System.out.println("dd");






    }
}

class Mythread extends  Thread {
    @Override
    public void run() {
        super.run();
    }
}